Caster



FIG. 1 illustrates a right side view of an embodiment of the caster showing the new design.

FIG. 2 illustrates a front view of the caster in FIG. 1.

FIG. 3 illustrates a back view of the caster in FIG. 1.

FIG. 4 illustrates a top view of the caster in FIG. 1; and,

FIG. 5 illustrates a slanted left side view and a rear view of the caster in FIG. 1. 

CLAIM The ornamental design for a caster, as shown and described. 